Jacks Prof Acid 21-7-7 25Lb — Single Unit

Jack's Professional® 21-7-7 Acid Fertilizer is a high-nitrogen formula developed for acid-loving nursery and landscape plants. Its strongly acidic reaction helps rapidly correct elevated root-zone pH, improving nutrient availability and supporting healthy green growth. Ideal for crops that perform best under acidic conditions, the formula contains no harmful chlorides and can be incorporated into fertility programs where alkaline irrigation water or media conditions require dependable pH management.